74 HYDROCARBONACEOUS PROXIMATE PRINCIPLES. 



Fig. 13. 



CELLS OF COSTAL CARTILAGES, containing 

 oil-globules. Human. 



Fig. 14. 



In the glandular cells of the liver, oil occurs constantly, in a slate of 

 health. It is here deposited in the substance of the cell (Fig. 14), 



generally in smaller globules 

 than the preceding. In some 

 cases of disease, it accumulates 

 in excessive quantity, and pro- 

 duces the state known as fatty 

 degeneration of the liver. This 

 is consequently only an exag- 

 gerated condition of that which 

 normally exists in health. 



In the carnivorous animals 

 oil exists in considerable quan- 

 tity in the convoluted portion 

 of the uriniferous tubules. (Fig. 

 15.) It is here in the form of 

 granules and rounded drops, 

 which sometimes appear to fill 

 nearly the whole calibre of the 

 tubules. 



It is found also in the secret- 

 ing cells of the sebaceous and 

 other glandules, deposited in 

 the same manner as in those of 

 the liver, but in smaller quan- 

 tity. It exists, beside, in large 

 proportion, in a granular form, 

 in the secretion of the seba- 

 ceous glandules. 



It occurs abundantly in the 

 marrow of the bones, both un- 

 der the form of free oil-globules 

 and inclosed in the vesicles of 

 adipose tissue, and is found in 

 considerable quantity in the 

 substance of the yellow wall of 

 the corpus luteum. 



It occurs also in the form of 



granules and oil-drops in the muscular fibres of the uterus (Fig. 16), 

 in which it begins to be deposited soon after delivery, and where it 

 continues to be present during the whole period of the resorption or 

 involution of this organ. 



In all these instances^ the oleaginous matters remain distinct in form 

 and situation from the other ingredients of the tissues, and are only 

 mechanically entangled among the fibres and cells, or imbedded in their 

 interior. 



HEPATIC CELLS. Human. 



